--- description: QNAP Systems announced that it has updated the operating system for its QuTS hero NAS line with QuTS hero h4.5.1 NAS operating system. title: QNAP QuTS Hero h4.5.1 Released image: https://www.storagereview.com/wp-content/uploads/2020/11/StorageReview-QNAP-QuTS-hero-h.4.5.1.png --- [![Storage Review]()](https://storagereview.com/) --- [Facebook](https://www.facebook.com/@storagereview) [X (Twitter)](https://twitter.twitter.com/storagereview) [Instagram](https://www.instagram.com/storagereview/) [LinkedIn](https://www.linkedin.com/company/storagereview-com) [YouTube](https://www.youtube.com/user/storagereview?sub_confirmation=1) [Email](mailto:info@storagereview.com) [Spotify](https://open.spotify.com/show/1y6VnznABhHeOSMOmbDTz0) [Reddit](https://www.reddit.com/r/StorageReview/) [Discord](https://discord.gg/TwMHb4azdC) [RSS Feed](https://www.storagereview.com/rss.xml) [TikTok](https://www.tiktok.com/@storagereview) [Facebook](https://www.facebook.com/@storagereview) [X (Twitter)](https://twitter.com/storagereview) [Instagram](https://www.instagram.com/storagereview/) [LinkedIn](https://www.linkedin.com/company/storagereview-com) [YouTube](https://www.youtube.com/user/storagereview?sub_confirmation=1) [Email](mailto:info@storagereview.com) [Spotify](https://open.spotify.com/show/1y6VnznABhHeOSMOmbDTz0) [Reddit](https://www.reddit.com/r/StorageReview/) [Discord](https://discord.gg/TwMHb4azdC) [RSS Feed](https://www.storagereview.com/rss.xml) [TikTok](https://www.tiktok.com/@storagereview) [![StorageReview.com](https://www.storagereview.com/wp-content/uploads/2026/07/Storage-Review-2x.png)](https://www.storagereview.com) ≡ Menu - [Home](https://www.storagereview.com/) - [Storage Reviews](https://www.storagereview.com/review) - [End User Reviews](https://www.storagereview.com/consumer) - [Enterprise Reviews](https://www.storagereview.com/enterprise) - [Ubiquiti Reviews](https://www.storagereview.com/best/ubiquiti-reviews) - [SR Merch](https://store.storagereview.com) - [Leaderboards](https://www.storagereview.com/best) - [Best Storage Arrays](https://www.storagereview.com/best/storage-arrays) - [Best Enterprise SSDs](https://www.storagereview.com/best/enterprise-ssds) - [Best Servers](https://www.storagereview.com/best/servers) - [Best Enterprise GPUs](https://www.storagereview.com/best/enterprise-gpus) - [Best Desktops for Local AI](https://www.storagereview.com/best/desktops-local-ai) - [Best Laptops for Local AI](https://www.storagereview.com/best/laptops-local-ai) - [Best Local LLM Tools](https://www.storagereview.com/best/local-llm-tools) - [Agentic AI Hardware](https://www.storagereview.com/best/agentic-ai-hardware) - [Best SSDs & Hard Drives](https://www.storagereview.com/best_drives) - [Best Portable SSDs](https://www.storagereview.com/best/portable-ssds) - [Best Business Laptops](https://www.storagereview.com/best/business-laptops) - [Best Mobile Workstations](https://www.storagereview.com/best/mobile-workstations) - [Best Desktop Workstations](https://www.storagereview.com/best/desktop-workstations) - [Best Mini PCs](https://www.storagereview.com/best/mini-pcs) - [Best Laptop Battery Life](https://www.storagereview.com/best/laptop-battery-life) - [Storage Reference Guide](https://www.storagereview.com/storage-reference-guide) - [About SR](https://www.storagereview.com/about-storagereview) - [StorageReview.com Sweepstakes Rules and Regulations](https://www.storagereview.com/storagereview-com-sweepstakes-rules-and-regulations) Search [Home](https://www.storagereview.com/) » [News](https://www.storagereview.com/news) » QNAP QuTS Hero h4.5.1 Released # QNAP QuTS Hero h4.5.1 Released by Adam Armstrong on November 3, 2020 [Enterprise](https://www.storagereview.com/enterprise)  ◇  [Software](https://www.storagereview.com/enterprise/software) Today QNAP Systems announced that it has updated the operating system for its QuTS hero NAS line with QuTS hero h4.5.1 NAS operating system. The latest update is all about enhancements and improvements including support for WORM (Write Once, Read Many) auto-committing, VM live migration, Wi-Fi WPA2 Enterprise, Azure Active Directory Domain Services (Azure AD DS), QuLog Center for centralized log management, and QuFirewall for network security. ![QuTS hero h4.5.1](https://www.storagereview.com/wp-content/uploads/2020/11/StorageReview-QNAP-QuTS-hero-h.4.5.1.png) QNAP first announced the128-bit, ZFS based QuTS hero line [earlier this year](https://www.storagereview.com/news/qnap-dual-port-fc-expansion-cards-support-quts-hero-nas-solutions). The line of NAS were all about data integrity, which makes them ideal for enterprise usage where data protection is emphasized. Much like [QTS](https://www.storagereview.com/review/qnap-qts-4-3-x-review), QuTS hero includes an App Center that allows users to expanding their NAS capabilities. ## **Feature highlights of QuTS hero h4.5.1 include:** - WORM Auto-committing: WORM is used to avoid modification of saved data. Data in WORM shared folders can only be written, and cannot be deleted or modified to ensure data integrity. - VM live migration: When NAS software/hardware must be updated/maintained, users can move running VMs between different NAS with no impact on VM availability, providing flexibility and efficiency for VM applications. - WPA2 Enterprise: WPA2 Enterprise provides enterprise-grade wireless security for business networks (including certificate authority, encryption key, and enhanced encryption/decryption). - Add NAS into Azure AD DS: By adding a QuTS hero NAS into Azure AD DS, IT staff are free from deploying and managing domain controller locally and have greater efficiency in managing user accounts and permissions for multiple NAS. - QuLog Center: Provides graphical statistic rankings of error/warning events and access, assisting in quickly monitoring and responding to potential system risks. Logs from multiple QNAP NAS can be centralized to the QuLog Center on a specific NAS for efficient management. - QuFirewall for network security: Supports IPv6, firewall access lists, and GeoIP filtering to restrict access based on geographical locations for higher network security. **More QuTS hero key features:** - Main memory read cache (L1 ARC), SSD second-level read cache (L2 ARC), and ZFS Intent Log (ZIL) for synchronous transactions with power fail protection to boost performance and security. - Supports up to 1 petabyte storage capacity for individual shared folders. - Supports native handling of standard RAID levels and additional ZFS RAID layouts (RAID Z), and flexible storage pool architecture. RAID Triple Parity and Triple Mirror deliver higher levels of data protection. - Block-based inline data deduplication, compression, and compaction reduce file size to conserve storage capacity, optimize performance, and improve SSD lifespan. - AES-NI hardware acceleration increases data signing and encryption/decryption efficiency over SMB 3. - Supports Fibre Channel (FC) SAN on NAS with QNAP 16Gb / 32Gb FC cards, ideal for post-production storage. - Install various apps from the App Center to enable hosting virtual machines and containers, conduct local/remote/cloud backups, create cloud storage gateways, and much more. **Availability** QuTS hero h4.5.1 is available now from the QNAP Download center. [QNAP QuTS hero](https://www.qnap.com/quts-hero/en-us/) **Engage with StorageReview** [Newsletter](https://www.storagereview.com/storage_newsletter) |  [YouTube](https://www.youtube.com/user/StorageReview "Opens in a new window") | Podcast  [iTunes](https://podcasts.apple.com/gb/podcast/storagereview-com-storage-reviews/id1060681115 "Opens in a new window")/ [Spotify](https://open.spotify.com/show/1y6VnznABhHeOSMOmbDTz0 "Opens in a new window") |  [Instagram](https://www.instagram.com/storagereview/ "Opens in a new window") |  [Twitter](https://twitter.com/storagereview "Opens in a new window") |  [TikTok](https://www.tiktok.com/@storagereview? "Opens in a new window") |  [RSS Feed](https://www.storagereview.com/rss.xml) ![]() ### Adam Armstrong Adam is the chief news editor for StorageReview.com, managing our internal and freelance content teams. 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